--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/source/symmetric/cbcmodeshim.h	Fri Nov 13 10:07:38 2009 +0530
@@ -0,0 +1,113 @@
+/*
+* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+
+#ifndef __CBCMODESHIM_H__
+#define __CBCMODESHIM_H__
+
+#include <cbcmode.h>
+
+/**
+@file
+@internalComponent
+@released
+*/
+
+namespace CryptoSpi 
+	{
+	class CSymmetricCipher;
+	}
+
+/**
+CBC mode encryptor shim class that delegates all work to CModeCBCEncryptor.
+This should only be instantiated by CModeCBCEncryptor::NewLC
+*/
+NONSHARABLE_CLASS(CModeCBCEncryptorShim) : public CModeCBCEncryptor
+{
+public:
+	/**
+	Creates a new CModeCBCEncryptorShim. If the block transfer 
+	@param aBT A pointer to the block transform object.
+	@param aIV The initialisation vector to use.
+	@return A pointer to a CModeCBCEncryptorShim instance or NULL if the block transform
+	does not support SPI or the SPI plug-in does not support CBC mode
+	*/
+	static CModeCBCEncryptorShim* NewL(CBlockTransformation* aBT, const TDesC8& aIV);
+
+	// From CBase
+	TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
+
+	// From CBlockTransformation
+	void Reset();
+	TInt BlockSize() const;
+	TInt KeySize() const;
+	void Transform(TDes8& aBlock);	
+
+	// From CBlockChainingMode
+	void SetIV(const TDesC8& aIv);
+	
+private:
+	/// Constructor
+	CModeCBCEncryptorShim(CryptoSpi::CSymmetricCipher* aSymmetricCipherImpl);
+	
+	// Just invokes ContructL in super-class
+	void ConstructL(CBlockTransformation* aBT, const TDesC8& aIv);
+	
+	// owned by block transform - iBT
+	CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;		
+};
+
+/**
+CBC mode decryptor shim class that delegates all work to CModeCBCDecryptor.
+This should only be instantiated by CModeCBCDecryptor::NewLC
+*/
+NONSHARABLE_CLASS(CModeCBCDecryptorShim) : public CModeCBCDecryptor
+{
+public:
+	/**
+	Creates a new CModeCBCEncryptorShim.
+	@param aBT A pointer to the block transform object.
+	@param aIV The initialisation vector to use.
+	@return A pointer to a CModeCBCDecryptorShim instance or NULL if the block transform
+	does not support SPI or the SPI plug-in does not support CBC mode
+	*/
+	static CModeCBCDecryptorShim* NewL(CBlockTransformation* aBT, const TDesC8& aIV);
+
+	// From CBase
+	TInt Extension_(TUint aExtensionId, TAny*& a0, TAny* a1);
+
+	// From CBlockTransformation
+	void Reset();
+	TInt BlockSize() const;
+	TInt KeySize() const;
+	void Transform(TDes8& aBlock);	
+
+	// From CBlockChainingMode
+	void SetIV(const TDesC8& aIv);
+	
+private:
+	/// Constructor
+	CModeCBCDecryptorShim(CryptoSpi::CSymmetricCipher* aSymmetricCipherImpl);
+	
+	// Just invokes ContructL in super-class
+	void ConstructL(CBlockTransformation* aBT, const TDesC8& aIv);
+		
+	// owned by block transform - iBT
+	CryptoSpi::CSymmetricCipher* iSymmetricCipherImpl;
+};
+
+#endif	//	__CBCMODESHIM_H__